The wallhack works by providing a custom, modified version of the opengl32.dll file. When you place this custom DLL in the game's directory, the game loads it instead of the original system file. This modified library alters the rendering process; it effectively disables the depth test for player models, causing them to be drawn on top of walls, which makes them visible through any obstacle. This technique is known as "OpenGL hooking".
: Start the game and ensure the "Renderer" is set to OpenGL in the video settings. How to Use (F1 Toggle) cs 16 opengl32dll wallhack f1 install